title: Frequency of Hearing Impairment among Full-term Newborns in Yazd, Iran.
abstract: OBJECTIVE
  Permanent congenital hearing loss, a common congenital anomaly, may affect speech and language acquisition, academic achievement and social development. Current standards emphasize early recognition of congenital hearing loss. This study was conducted to find the prevalence of hearing impairment in term newborns in Yazd, Iran.
  
  
  METHODS
  This was a descriptive-analytic study conducted in Yazd on 7250 term newborns. Otoacoustic emissions (OAEs) test was performed in all newborns during the first 24 hours after birth. Those who failed to respond at the first step were retested 15 days later. Those who failed to respond at the second step too, were tested by acoustic brainstem responses (ABR) test. Chi square test was used for data analysis.
  
  
  RESULTS
  From 7250 newborns in the first step 598 (8.2%) and 682 (9.4%) ears (right and left, respectively) failed. In the second step 51 (0.7%) and 58 (0.8%) ears (right and left, respectively) failed. Consanguinity and route of delivery had significant effect on the frequency of hearing loss.
  
  
  CONCLUSIONS
  The overall frequency of congenital hearing loss in this study was found high.
authors.affiliation: Department of pediatrics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
authors.forename: Zia
authors.initials: Z
authors.lastname: Islami
authors.forename: Mohammad-Hossein
authors.initials: MH
authors.lastname: Baradaranfar
authors.forename: Amir-Houshang
authors.initials: AH
authors.lastname: Mehrparvar
authors.forename: Abolfazl
authors.initials: A
authors.lastname: Mollasadeghi
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Mostaghaci
authors.forename: Elham
authors.initials: E
authors.lastname: Naghshineh
keywords: Auditory Brainstem Responses; Congenital; Hearing Loss; Screening